| Mastuerzo vs Jin | 18–28 | 39.13% |
| Mastuerzo vs King | 10–20 | 33.33% |
| Mastuerzo vs Lili | 11–12 | 47.83% |
| Mastuerzo vs Lidia | 7–15 | 31.82% |
| Mastuerzo vs Kazuya | 10–11 | 47.62% |
| Mastuerzo vs Bryan | 8–12 | 40.00% |
| Mastuerzo vs Yoshimitsu | 9–10 | 47.37% |
| Mastuerzo vs Hwoarang | 11–8 | 57.89% |
| Mastuerzo vs Law | 5–13 | 27.78% |
| Mastuerzo vs Alisa | 11–6 | 64.71% |
| Mastuerzo vs Devil Jin | 8–8 | 50.00% |
| Mastuerzo vs Reina | 4–12 | 25.00% |
| Mastuerzo vs Lee | 6–8 | 42.86% |
| Mastuerzo vs Steve | 8–4 | 66.67% |
| Mastuerzo vs Eddy | 7–5 | 58.33% |
| Mastuerzo vs Dragunov | 3–8 | 27.27% |
| Mastuerzo vs Azucena | 3–7 | 30.00% |
| Mastuerzo vs Nina | 1–7 | 12.50% |
| Mastuerzo vs Paul | 2–5 | 28.57% |
| Mastuerzo vs Jack-8 | 2–5 | 28.57% |
| Mastuerzo vs Leroy | 5–2 | 71.43% |
| Mastuerzo vs Raven | 5–2 | 71.43% |
| Mastuerzo vs Leo | 4–2 | 66.67% |
| Mastuerzo vs Lars | 0–6 | 0.00% |
| Mastuerzo vs Shaheen | 3–2 | 60.00% |
| Mastuerzo vs Kuma | 4–1 | 80.00% |
| Mastuerzo vs Victor | 0–5 | 0.00% |
| Mastuerzo vs Anna | 1–4 | 20.00% |
| Mastuerzo vs Xiaoyu | 3–1 | 75.00% |
| Mastuerzo vs Feng | 1–3 | 25.00% |
| Mastuerzo vs Fahkumram | 2–1 | 66.67% |
| Mastuerzo vs Asuka | 0–2 | 0.00% |
| Mastuerzo vs Jun | 1–1 | 50.00% |
| Mastuerzo vs Heihachi | 2–0 | 100.00% |
| Mastuerzo vs Panda | 1–0 | 100.00% |
| Mastuerzo vs Zafina | 1–0 | 100.00% |
Limitations
This data is often requested to give insight into which characters you have more trouble with than others, but it is not particularly helpful for that. The main issue is that it is heavily skewed by how strong the opponents you play are.
For example, this data suggests my worst matchup is clearly vs Reina, but that's just because most of those games are vs Yagami.
There is a way to account for this being worked on. The central idea is to assign each matchup a rating vs you which adjusts based on the result, much like the regular rating but also based on the rating of each player. With this, it would give a better summary of how well you perform vs each character.
In the meantime, this page is here to present the data as requested.